My two year old Irish Setter has a very pale brown nose. She started off with a black nose, but it has steadily got lighter. Is this normal, both my other setters had black noses

Hi Sue,this sounds like a case of winter brown nose. It should return to normal colour in the spring. There are some seaweed based supplements which might help. Petcetera do one called Ultimate, which I have tried with some success. Also some people say that plastic food and water dishes can be a cause of this loss of pigment.
Dawn R.